Question

In a class, 18 students took Physics, 23 students took Chemistry and 24 students took Mathematics, 12 took both Physics and Chemistry and 11 took both Physics and Mathematics. If 6 students offered all the three subjects, find: (a) the total number of students. (b) how many took Maths but not Chemistry. (c) how many took exactly one of the three subjects.

Answer 1

Answer:

5 is the correct answer

Step-by-step explanation:

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Answer 2

Answer: (a) 65 students. (b) 35 students. (c)36 students

Step-by-step explanation:

(a) Add the students who took only 1 subject ( 18+23+24 ) because others all are included in this .

(b) Add the students who took physics and math  And the students who took only math ( 24+11 ) because the question said the students who didn't take chemistry and these students didn't take chemistry but they did take math.

(c) Add the students who took 2 subjects and 3 subjects ( 12+11+6 ) and subtract it from the number of students in the class ( 65 ) .

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